Nekatalytická remediace vodných roztoků

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F06%3A00016573" target="_blank" >RIV/00216224:14310/06:00016573 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Non-catalytic remediation of aqueous solutions by microwave-assisted photolysis in the presence of H2O2

Popis výsledku v původním jazyce

Advanced oxidation processes have emerged as potentially powerful methods to transform organic pollutants in aqueous solutions into nontoxic substances. In this work, a comparison of degradation dynamics of five aromatic compounds (phenol, chlorobenzene,nitrobenzene, 4-chlorophenol, and pentachlorophenol) in aqueous solutions by non-catalytic UV, MW, and combined MW/UV remediation techniques in the presence of H2O2 is presented. Relative degradation rate constants have been monitored and the major products were identified. The combined degradation effect of UV and MW radiation was found larger than the sum of isolated effects in all cases studied. It is concluded that such an overall efficiency increase is essentially based on a thermal enhancement ofsubsequent oxidation reactions of the primary photoreaction intermediates. Optimizations revealed that this effect is particularly significant in samples with a low concentration of H2O2, however, a larger excess of H2O2 was essential to

Název v anglickém jazyce

Non-catalytic remediation of aqueous solutions by microwave-assisted photolysis in the presence of H2O2

Popis výsledku anglicky

Advanced oxidation processes have emerged as potentially powerful methods to transform organic pollutants in aqueous solutions into nontoxic substances. In this work, a comparison of degradation dynamics of five aromatic compounds (phenol, chlorobenzene,nitrobenzene, 4-chlorophenol, and pentachlorophenol) in aqueous solutions by non-catalytic UV, MW, and combined MW/UV remediation techniques in the presence of H2O2 is presented. Relative degradation rate constants have been monitored and the major products were identified. The combined degradation effect of UV and MW radiation was found larger than the sum of isolated effects in all cases studied. It is concluded that such an overall efficiency increase is essentially based on a thermal enhancement ofsubsequent oxidation reactions of the primary photoreaction intermediates. Optimizations revealed that this effect is particularly significant in samples with a low concentration of H2O2, however, a larger excess of H2O2 was essential to

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Photochemistry and Photobiology A: Chemistry

ISSN

1010-6030

e-ISSN

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Svazek periodika

177

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

24-33

Kód UT WoS článku

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EID výsledku v databázi Scopus

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